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Calculate the charge per length for the capacitor.

lambda =_______ C/m.

Calculate the total charge on the capacitor.

Q=_____ C.

Calculate the capacitance.

C=______ F.

Calculate the energy stored in the capacitor when fully charged.

U=_______ J.

Well i figure out a couple of equations to use but i seem to get them wrong! all are wrong! Any Help!

so the equation i used were :

To Find C = 2 pi €o L ln(r2/r1) = 12.22 *10^-12 F = 12.22 pF.

To Find U = (1/2) C V^2 = 250*10^-12 J = 250 pJ.

To Find Q = C V = 78.2*10^-12 C = 78.2 pC

To Find lambda = Q/L = 2.06*10^-10 C/m = 206 pC/m.